Blisters on children’s feet may be caused by friction and traumatic blisters, or they may be caused by mosquito bites and blistering allergies, which is a type of blistering in papular urticaria, and there may be other causes of local skin damage and so on. If the blisters are not too big, you can generally use Furfurylate lotion to apply it directly on the top, or you can use Borazin cream to apply it on the top. If the blisters are too large, or even if there are signs of infection, then the blisters need to be removed in a timely manner, or even the walls of the blisters can be cut out and then cleared.